Those are UHC brand springers at Canadian Airsoft, btw. (At least the berettas.) They come with a removable orange tip (it's a threaded silencer adapter) that you can take off with pliers or something similar.
Check out
this link for a few similar springer "reviews."
I won't recommend against getting a springer, as they're a cheap weapon if you're only looking to plink coke cans or something... but for another $30 on that same website, you can get a Gas NBB (non blow back) pistol that will be leaps and bounds above the performance you'd get out of a springer. And it's still not too bad of a dent in your wallet if you're not sure you really want to get into airsoft.
